Brake or recuperator for guns.



E. SCHNEIDER.

BRAKE 0R RECUPERATOR FOR GUNS.

APPLICATION FILED MAY 15, I917.

1 ,299,4O9, Patented Apr. 1, 1919.

2 SHEETSSHEET I.

E. SCHNEIDER.

BRAKE 0R RECUPERATOR FOR GUNS.

APPLICATION FILED MAYIfi, 1917.

Patented Apr. 1,1919. 2' SHEETSSHEET 2 EUGENE SCHNEIDER, F LE GREUZO'I', FRANCE, ASSIGNOR TO SCHNEIDER 8t CIE., OF PARIS, FRANCE, A LIMITED JOINT-STOCK COMPANY OF FRANCE.

BRAKE OR RECUPEEATOR FOR G UNS.

Application filed May 15, 1917. Serial No. 168,859.

To all whom may concern Be it known that I, EUGENE SCHNEIDER, a citizen of the French Republic, and residing at Le Creuzot, France, have'invented packing constituting the joint proper should be pressed radially against'the fixed or movable surface along which; it moves or which moves pastit, and the bearing surfacc of this packing must alsobe assmall aspos'sible inorder to obviate heating.

None of the joints at present 1n use fulfils completely these requirements. Accord-J ing to this invention the desired result is attransmission of the said pressure may either lubricating ring arranged in an annular chamber provided in the moving part or in the fixed part as the case may be.

The manner in which this invention is to be performed Will now be more particularly described with reference to the accompany- Specification of Letters Patent.

Patented Apr. 1, 1919.

- ing drawings which illustrate by way of example two practical constructions of the im proved joint according to this invention.

In these drawings:

Figures 1, 1, 2 and 2 are longitudinal sections of two constructional forms of this invention applied to a recuperator for guns.

As shown, A is the fixed part such as the gun slide or cradle to which is attached the rod B of the piston C over which the body of the recuperator formed in the sliding part E of the gun moves. D is the chamber filled for instance with liquid, and communicating in the usual manner by means of a passage I) with an air reservoir.

In both constructional forms, the joints 'whether fixed or movable, are formed according to this invention by a ring of dermatine or hardened rubber F of small width,

and of trapezoidal, rectangular, or other suitable section, inclosed laterally between metal walls f, f, and to which the pressure existing in the'recuperator is transmitted solely in the radial direction by an enveloping or enveloped rubber ring G, of greater width.

By means of the communicating passages d, al the pressure existing in the recuperator is transmitted to the rings G. This pressure may be increased by the pressure of a spring II which assures that the ring G shall be subjected to a pressure greater than that of the atmosphere, even when the air in the recuperator is not under pressure.

F G are additional safety joints formedtoward the outside in front of the joints FG; they are constructed in the same manner as the latter joints.

In the construction shown in Figs. 2 and 2 the joints F-G are formed respectively in chambers I, J, which communicate With the atmosphere through the respective passages i and The ring G whlch transmits the pressure of the recuperator radially to the dermatine ring F, receives this pressure through the medium of a movable piston-like member KLM of known construction. The metal cup K of this pistonlike member which envelops the ring 'G (piston rod joint) or is enveloped by it (piston joint) as the case may be, is subjected externally on its edge 70 to atmospheric pressure, while it receives the recuperator pressure internally over the whole of its surface 72 The lubrication of the rubbing surface of the dermatine joints F may be assured in the manner shown by way of example in the case of the movable joint in Figs. 2 and 2.

I In an annular groove formed in the outer I claim as new and desire to secure by Letters Patent. is:

1. In brakes or recuperators for guns,.the combination of an elastic ring confined radially between rigid walls and subjected to pressure Within the brake or recuperator, with a packing ring having a bearing surface to form a packed joint, said packing raeaaoe ring being located in one of the said rigid walls in contact with said elastic ring and fixedly confined at the front and rear.

2. {In brakes or recuperators for guns, the combination of a packing ring of hard rubber having a bearing surface to form a.

packed joint, fixed confining walls at the frontand rear of said packing ring, a radially confined ring of soft rubber of greater width than said packing ring engaging that surface of said packing ring opposed to its bearing surface, an abutment against which said soft rubber ring rests, and means transmitting pressure within the brake or recuperator ,to that side of said Soft rubber ring opposed to said abutment.

In testimony whereof I-have signed this specification in the "presence of two sub-- scribing witnesses.

EUGENE SCHNEIDER. \Vitnesses:

CHAS. P. PRESSLY. "ANDRE: Mos'rroknn. 

